NEET Sample Paper NEET Sample Test Paper-55

  • question_answer
    In which of the following reactions \[\Delta S\] is positive?

    A) \[{{H}_{2}}O\left( l \right)\,\,\to \,\,{{H}_{2}}O\left( s \right)\]

    B) \[3{{O}_{2}}(g)\,\to \,2{{O}_{3}}(g)\]

    C) \[{{H}_{2}}O\,(l)\to {{H}_{2}}O\,(g)\]

    D) \[{{N}_{2}}(g)+3{{H}_{2}}(g)\,\,\to \,\,N{{H}_{3}}(g)\]

    Correct Answer: C

    Solution :

    \[\Delta S\,\,=\,\,Liquid\,\,\to \,\,Gas\] In option (3) entropy change is +ve.


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